HP NonStop G-Series - Manual (Page 43)

Measure User’s Guide — 520560-003
3 -1
3
Configuring and Running
Measurements
Taking a measurement involves selecting the resources to be measured, creating a
measurement configuration for those resources, and starting the measurement. While
a measurement runs, you can check its status and display data in the measurement
data file or in the active counters associated with the measurement configuration. After
it stops, you can display or plot data from the measurement data file.
The Measurement Configuration
The measurement configuration identifies the system resources you want to measure.
Measurement configurations vary depending on the kind of performance information
you need. For example:
•
A configuration useful for collecting data for performance analyses and capacity
planning projects might include all CPUs, disks, devices, communication lines,
Fiber Optic Extension (FOX) messages, and Expand traffic, as well as major
application processes on a system.
•
A configuration aimed at monitoring and balancing the performance of processes
on a system might include all CPUs and all major processes.
•
A configuration aimed at debugging or fine-tuning process code might include
process code-ranges for all the processes on a system that are potential problems.
A typical measurement configuration usually includes all CPUs, processes, and disks,
and selected disk opens and files on a system.
Topic Page
The Measurement Configuration 3-1
Running a Measurement 3-4
Checking Measurement Activity and Data Files 3-8
Potential Data File Errors 3-10
Viewing Reports of Measurement Data 3-11
Note. When you start a measurement using the START MEASUREMENT command, you
specify other information needed for a measurement, such as the starting and ending times,
the name of the data file associated with the configuration, and the intervals at which data is
written to the data file.